Yes, I've checked out Julia. Yes, it's right up my alley. So were all the single-assignment languages from the late 1980s, so were Lisp machines, long-instruction-word architectures, SIMD gizmos with 2^16 processors, so was Fortress and so were half a dozen other silver bullets that killed perhaps a quarter of a werewolf before dying out because nobody got paid to use them. ;-)
It's really about *money* and *time* - solving problems in acceptable time frames for people with a budget - not inventing yet another programming language that's Turing complete. R is the closest *living* language today to the way I think. And I've been using it for something like twelve years.
It's exactly the right mix of numerical capabilities, functional programming paradigm and community structure. You can build web apps in R. You can collect Twitter data in R. You can talk to PostgreSQL and Redis and Hadoop and MongoDB in R. It doesn't have confusing syntactical shortcuts to confuse code readers. And it even has a (rather new) byte-code compiler!